Vulnerability identifier: #VU91179

Vulnerability risk: Low

CVSSv3.1: 6.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47432

CWE-ID: CWE-190

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer overflow within the __genradix_iter_peek() function in lib/generic-radix-tree.c. A local user can execute arbitrary code.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/784d01f9bbc282abb0c5ade5beb98a87f50343ac
http://git.kernel.org/stable/c/ec298b958cb0c40d70c68079da933c8f31c5134c
http://git.kernel.org/stable/c/aa7f1827953100cdde0795289a80c6c077bfe437
http://git.kernel.org/stable/c/9492261ff2460252cf2d8de89cdf854c7e2b28a0

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.